Brett Schaller wrote:
One of the counteractions refers to a "crewed" unit, but I can't find a definition of "crewed" within the rules. I assume HMGs and MMGs are crewed, but what about LMGs? How about vehicles?
Counteractions in the Firefight Generator are always linked to a Generator card with either Victory Points or Special Rules. In this particular case, you're probably talking about the Soviet Counteraction number 3:
"AI closest to a Spent, 'Crewed' Unit..."
If you check the card to which this is linked (Soviet Generator Card number 3), you'll find the explanation:
Soviet +2 VP: Immediately, receive an additional 2 VP for each destroyed German vehicle or crewed Unit (Unit with a white box over its firepower). This is in addition to VP received for destroying a Unit.